CN104417480A - Occupant protection device - Google Patents

Occupant protection device Download PDF

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Publication number
CN104417480A
CN104417480A CN201410427614.8A CN201410427614A CN104417480A CN 104417480 A CN104417480 A CN 104417480A CN 201410427614 A CN201410427614 A CN 201410427614A CN 104417480 A CN104417480 A CN 104417480A
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CN
China
Prior art keywords
occupant
seat
air
bag
module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410427614.8A
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Chinese (zh)
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CN104417480B (en
Inventor
长泽勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Subaru Corp
Original Assignee
Fuji Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Heavy Industries Ltd filed Critical Fuji Heavy Industries Ltd
Publication of CN104417480A publication Critical patent/CN104417480A/en
Application granted granted Critical
Publication of CN104417480B publication Critical patent/CN104417480B/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/0153—Passenger detection systems using field detection presence sensors
    • B60R21/01534—Passenger detection systems using field detection presence sensors using electromagneticwaves, e.g. infrared
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/0153—Passenger detection systems using field detection presence sensors
    • B60R21/01536—Passenger detection systems using field detection presence sensors using ultrasonic waves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/0153—Passenger detection systems using field detection presence sensors
    • B60R21/01538—Passenger detection systems using field detection presence sensors for image processing, e.g. cameras or sensor arrays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/01552—Passenger detection systems detecting position of specific human body parts, e.g. face, eyes or hands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
    • B60R2021/0039—Body parts of the occupant or pedestrian affected by the accident
    • B60R2021/0051—Knees
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
    • B60R2021/0039—Body parts of the occupant or pedestrian affected by the accident
    • B60R2021/0053—Legs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
    • B60R2021/0039—Body parts of the occupant or pedestrian affected by the accident
    • B60R2021/0055—Pelvis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23107—Inflatable members characterised by their shape, construction or spatial configuration the bag being integrated in a multi-bag system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23169—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for knee protection

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Air Bags (AREA)

Abstract

The present invention relates to an occupant protection device. Provided is the occupant protection device yields fairly high occupant protection effects. A controller (100) of an occupant protection device (10) identifies the positions of the lower legs of an occupant (M) seated in a seat (5) based on detection signals of sensor modules (61, 71, 81, 91), and controls the expansion states of airbag modules (41, 51) for lower legs as to the identified positions of the lower legs to support the lower legs of the occupant (M) in the identified positions of the lower legs using the expanded airbag modules (41, 51) for lower legs.

Description

Occupant protection system
Technical field
The present invention relates to the occupant protection system for the protection of occupant in the vehicles such as automobile.
Background technology
In occupant protection system, the assembly that uses of seat belts, air-bag module (patent documentation 1,2).
Safety belt assembly is for being used in seat by the occupant restraint be sitting on the seat of vehicle.
Air-bag module is for making safety air bag carry out launching between the structure and occupant of the such as bearing circle, instrument carrier panel, side panel and so on of vehicle and make the upper bodies such as the head of occupant can not bump against structure consumingly and use.
Prior art document
Patent documentation
Patent documentation 1:(Japan) JP 2011-213195 publication
Patent documentation 2:(Japan) JP 2005-067273 publication
In addition, as air-bag module, there is the air-bag module of the lower limb of occupant.The air-bag module of the lower limb of patent documentation 1 is from the expansion at one's knees of the occupant of instrument carrier panel to the seat being sitting in vehicle.Launched by lower limb air-bag module, when colliding, (lower limb) at one's knees of occupant are difficult to move forward.Occupant can not abut with instrument carrier panel at one's knees.Can suppress occupant move at one's knees abut with instrument carrier panel time input to the impact of lower limb.
By these occupant protection systems, hardware dummy is being utilized to carry out in the collision experiment verified, the higher effect of the damage of personnel when colliding that can be inhibited.
But, in occupant protection system, seeking further improvement.
Such as, when colliding, even if lower limb air-bag module launches, also the space of not launching air-bag module can be remained in the underfooting of the downside of lower limb air-bag module.The lower limb of occupant likely move forward through the space of its underfooting.In addition, moved forward from the seated position before collision by the lower limb of occupant, the position of the upper body of occupant likely declines from the seated position before collision.
Like this, in occupant protection system, although can obtain necessarily higher passenger protection effect, what seeking is that what one hopes or wishes for obtains more accurate passenger protection effect.
Summary of the invention
Occupant protection system of the present invention comprises: multiple air-bag module, and it comprises the lower limb air-bag module that the lower limb portion to the occupant on the seat being sitting in vehicle launches; Control the control part of described multiple air-bag module; To the sensor module that the occupant sat on the seat detects, wherein said control part is connected with described sensor module, detection signal based on described sensor module determines the position in the lower limb portion of the occupant of the state of sitting on the seat, control the deployed condition of described lower limb air-bag module relative to the position in determined described lower limb portion, and by the described lower limb air-bag module after expansion, the lower limb portion of occupant is bearing in the position in determined described lower limb portion.
Preferably, described multiple air-bag module can have the knee lower safety air bag component of the knee bottom expansion to the occupant sat on the seat, as described lower limb air-bag module, described control part can determine the position of the position of the knee bottom of the occupant of the state of sitting on the seat as described lower limb portion based on the detection signal of described sensor module, described knee lower safety air bag component is launched to the position of determined described knee bottom, and by the described knee lower safety air bag component after expansion, by the position of the knee lower support of occupant in determined described knee bottom.
Preferably, described multiple air-bag module can have front air-bag module and rear air-bag module as described lower limb air-bag module, described front air-bag module launches backward in the front side of the knee bottom sitting occupant on the seat, and described rear air-bag module launches forward at the rear side of the knee bottom sitting occupant on the seat; Described control part determines the position of the position of the knee bottom of the occupant of the state of sitting on the seat as described lower limb portion based on the detection signal of described sensor module, then the position of described front air-bag module and described rear air-bag module the past backward determined described knee bottom is made to launch, and by the described front air-bag module after expansion and the described rear air-bag module after launching, from front and back by the position of the knee lower constraint of occupant in determined described knee bottom.
Preferably, described front air-bag module and described rear air-bag module can retrain two positions at least comprising knee in the knee of occupant, shank and ankle.
Preferably, described sensor module can have the pair of sensors assembly of the structure of the vehicle be juxtaposed in the lateral direction around seat, described control part by utilizing the calculating of the triangulation of the relative position of the detection signal of described pair of sensors assembly and described pair of sensors assembly, can determine the position of the knee bottom sitting occupant on the seat.
Preferably, described sensor module can have from least one sensor module selected in following sensor module: to the knee of the occupant sat on the seat, the sensor module detected is carried out in position before shank or ankle, to the knee of the occupant sat on the seat, the sensor module detected is carried out in shank or ankle position below, to the sensor module that the position of the seat taken in space is detected, and to the sensor module that the pressure distribution that the occupant sat on the seat produces detects, described control part is based on the detection signal of at least one sensor module described, determine the position in the lower limb portion of the occupant of the state of sitting on the seat.
Preferably, described sensor module can have the sensor detecting the position of occupant non-contactly of infradred sensor, ultrasonic transduter, imageing sensor etc.
Invention effect
In the present invention, by the lower limb air-bag module launched, the lower limb portion of occupant is bearing in the position in the lower limb portion of the occupant of seat state on the seat.The lower limb portion of occupant is difficult to the position of departing from determined lower limb portion.Consequently, the lower limb portion of occupant, when colliding, can maintain on seated position.Because the lower limb portion of occupant can maintain on seated position when colliding, so when colliding, the upper body of occupant is difficult to decline, and can expect on the seated position that fell before the collision.With such as with the seated position before colliding for benchmark and the safety belt assembly of occupant restraint combine, suitably can not only protect the lower limb of occupant, but also suitably can protect upper body.
Particularly, in the present invention, control part, based on the detection signal of sensor module, determines the position in the lower limb portion of actual seat occupant on the seat, determines the position of supporting lower limb portion based on this detection.Thus, even sit the build of occupant on the seat, physique, sitting posture are different, also can determine the position in the lower limb portion corresponding to respective build, physique, sitting posture, the position in its lower limb portion can be bearing in.No matter the build of occupant, physique, sitting posture how, can both expect higher passenger protection.
Like this, by the position that the lower limb portion of occupant is bearing in determined lower limb portion, the unavailable more accurate passenger protection of existing occupant protection system can be expected.
Accompanying drawing explanation
Fig. 1 is the instruction diagram of the riding vehicle representing the occupant protection system with first embodiment of the invention;
Fig. 2 is the instruction diagram of the occupant protection system representing the vehicle being equipped on Fig. 1;
Fig. 3 is the figure be described in the configuration taking space to a pair seat front sensor assembly;
Fig. 4 is the figure be described in the configuration taking space to sensor module after a pair seat;
Fig. 5 be seat position sensor assembly and pressure distribution sensor module taking the instruction diagram of configuration in space;
Fig. 6 is the diagram of circuit representing the regulable control that control part carries out;
Fig. 7 is the diagram of circuit of control when representing collision that control part carries out;
Fig. 8 is the front air-bag module of the second embodiment and the instruction diagram of rear air-bag module;
Fig. 9 is the diagram of circuit representing the regulable control that control part carries out;
Figure 10 represents the diagram of circuit of control part to control during collision;
Figure 11 is the front air-bag module of the 3rd embodiment and the instruction diagram of rear air-bag module.
Nomenclature
1 riding vehicle (vehicle)
4 take space
5 seats
6 cushion part
10 occupant protection systems
31 bearing circle air-bag modules (air-bag module)
Air-bag module (air-bag module, knee lower safety air bag component) before 41
Air-bag module (air-bag module, knee lower safety air bag component) after 51
61 front sensor assemblies (sensor module)
62 infradred sensors
Sensor module (sensor module) after 71 seats
81 seat position sensor assemblies (sensor module)
91 pressure distribution sensor modules (sensor module)
100 control parts
Detailed description of the invention
Below, with reference to accompanying drawing, embodiments of the present invention are described.
[the first embodiment]
Fig. 1 is the instruction diagram of the riding vehicle 1 representing the occupant protection system 10 possessing first embodiment of the invention.Riding vehicle 1 is the automobile that many people that driver and co-driver can be taken take.Automobile is an example of vehicle.Below, with the vehicle of Fig. 1 for benchmark, use upper and lower all around.
The riding vehicle 1 of Fig. 1 has vehicle body 2.The vehicle body 2 of Fig. 1 is made up of front portion, middle part, rear portion.Tire 3 is configured with in the front portion of vehicle body 2 and rear portion.
Be formed at the middle part of vehicle body 2 take for occupant M take space 4.Taking in space 4, be configured with to front two rows the seat 5 that driver or co-driver are taken one's seat.Take space 4 and there is the cage construction such as multiple frame parts being combined into box frame type.By this cage construction, take space 4 and be difficult to destroy.
In the front portion of vehicle body 2, be configured with the not shown frame parts extended forward from the cage construction taking space 4.Frame parts can be set to the longitudinal bending in response to input during collision and absorb the hollow structure impacted.Frame parts to being configured at the such as combustion engine of front portion of vehicle body 2, electrical motor, battery, tire 3 support.Riding vehicle 1 both can be take combustion engine as the automobile of main power, also can be take electrical motor as the electronlmobil of main power, can also be the hybrid power type automobile that is propulsion source with combustion engine and electrical motor.
Baggage container is formed at the rear portion of vehicle body 2.At the rear portion of vehicle body 2, be configured with the not shown frame parts extended back from the cage construction taking space 4.Frame parts can be set to the preferred longitudinal bending when colliding and easily absorb the hollow structure of impact.Frame parts to being configured at the such as spare tyre at rear portion of vehicle body 2, battery used for electric vehicle, tire 3 support.
Fig. 2 is the instruction diagram of the occupant protection system 10 representing the vehicle being equipped on Fig. 1.Occupant protection system 10 is arranged to be taken in space 4.
Figure is shown with the seat 5 taking space 4 being configured at riding vehicle 1, the occupant M be sitting on seat 5 in the lump in fig. 2.Be explained, in fig. 2, in order to make it apparent, the same seat 5 that same occupant M sits is depicted in two positions, left and right.
Seat 5 has: there is the cushion part 6 of roughly tetragonal seat surface, from cushion part 6 vertically disposed back-rest 7, from the outstanding downwards foot section 8 of cushion part 6.Occupant M makes waist fall into cushion part 6, leans against at back-rest 7 later.Occupant M is sitting on seat 5.
The foot section 8 of seat 5 is slidably mounted on seat slide 9.Seat slide 9 extends in the floor taking space 4 along fore-and-aft direction.Seat slide 9 is fixed on the cage construction of vehicle body 2.Seat 5 can move in front-rear direction, can be fixed on the position after moving.In addition, the adjustable cushion part 6 of seat 5 is such as apart from the height of floor, the angle of inclination of back-rest 7.Thus, such as, chaufeur can easily operate bearing circle and drg etc., with respective build and like corresponding best seated position and be sitting on seat 5 and drive.
The occupant protection system 10 of Fig. 2 have safety belt assembly 21, multiple air-bag module 31,41,51, multiple sensor module 61,71,81,91, control part 100.
Safety belt assembly 21 is the unit occupant M be sitting on seat 5 being constrained in seat 5.Safety belt assembly 21 has safety strap 22, hyoplastron 23, buckle 24, taking-up device 25.
Safety strap 22 is elongated long strip.The side outside the left and right directions of such as cushion part 6 is fixed in one end of safety strap 22.The other end of safety strap 22 is fixed on taking-up device 25.
Taking-up device 25 pairs of safety strap 22 discharge, keep, batch.Taking-up device 25 is fixed on the skeleton part defining and take space 4.As skeleton part, there is such as so-called B column.
Hyoplastron 23 passes for safety strap 22.
Buckle 24 removably engages with hyoplastron 23.Buckle 24 is fixed on the side inside the left and right directions of such as cushion part 6.
Under the common state that taking-up device 25 discharges safety strap 22, occupant M is sitting on seat 5, and in front of being moved to by hyoplastron 23, the mode of to carry out lodge with safety strap 22 in the front of upper body makes hyoplastron 23 engage with buckle 24.Thus, a part of lodge of safety strap 22 waistline before the occupant M be seated.Another part of safety strap 22 is from the waist of the occupant M be seated, and lodge is to shoulder obliquely.In this condition, taking-up device 25, by the actuation signal from control part 100, batches and keeps safety strap 22.The occupant M be sitting on seat 5 is retrained by seat 5.
Be explained, as safety belt assembly 21, except utilizing the safety belt assembly of above-mentioned bikini, also can utilize the safety belt assembly of four-point.
Air-bag module 31,41,51 is the unit that the structure and carrying out between the occupant M be sitting on seat 5 and the structure of vehicle in order to not make the occupant M be sitting on seat 5 encounter the vehicles such as bearing circle launches substantially.Air-bag module 31,41,51 has safety air bag, inflator pump.
Safety air bag is by the extensible bag of the injection of high pressure gas.Inflator pump stores high pressure gas.By the high pressure gas of inflator pump are injected safety air bag, safety air bag launches.The shape of the safety air bag after expansion can according to each air-bag module 31,41,51 position is set, expansion direction, spread suitably design.
And, in the occupant protection system 10 of Fig. 2, as multiple air-bag module, there is air-bag module 51 after air-bag module 41 before bearing circle air-bag module 31, pair of right and left, pair of right and left.
Bearing circle air-bag module 31 is configured at bearing circle.Front upper safety air bag 32 and front upper inflator pump 33 are built in bearing circle.By the actuation signal from control part 100, high pressure gas are injected front upper safety air bag 32 by front upper inflator pump 33.Front upper safety air bag 32 launches between the face and bearing circle of occupant M.Thereby, it is possible to make the upper body such as face, chest of the occupant M moved forward when colliding bump against bearing circle.
Front air-bag module 41 is configured at the bottom of instrument carrier panel.Front lower safety air bag 42 and front lower inflator pump 43 are configured in the bottom of instrument carrier panel.Before pair of right and left, air-bag module 41 is in the bottom of instrument carrier panel, is arranged side by side in left and right.By the actuation signal from control part 100, high pressure gas are injected front lower safety air bag 42 by front lower inflator pump 43.Front lower safety air bag 42 launches between instrument carrier panel and seat 5.Front air-bag module 41, in the front side of knee bottom being sitting in the occupant M on seat 5, launches backward.Thus, when colliding, the knee bottom such as knee, shank, ankle of occupant M is difficult to move forward.Consequently, the knee of occupant M and ankle are difficult to move to and abut with instrument carrier panel or tread plate.Be difficult to intense impact when colliding from the knee abutted with instrument carrier panel or tread plate and ankle input.
Like this; the occupant protection system 10 of Fig. 2 by bearing circle air-bag module 31 from bearing circle to face direction that launches from, from instrument carrier panel to air-bag module 41 before the pair of right and left that the direction of knee bottom is launched, the higher effect of personal damage when colliding that can be inhibited in the collision experiment such as utilizing hardware dummy.
But, in occupant protection system 10, seeking further improvement.
Such as, when colliding, even if expanded front air-bag module 41, also the space of not launching front air-bag module 41 can have been remained underfoot.The lower limb of occupant M likely move forward through the space of its underfooting.When supposing that the lower limb of occupant M abut with the tread plate of the front side of instrument carrier panel, then likely there is transient breakdown due to the load inputted from tread plate in the lower limb portion of occupant M.
In addition, such as, when colliding, moved forward by the lower limb of occupant M, the upper body position of occupant M likely declines.Safety strap 22, by the waist of occupant restraint M or the chest position of regulation under the state that is sitting on seat 5 at occupant M, protects occupant M to escape injury.But, because the position of the upper body of occupant M declines, likely this function can not be played.
Therefore, in the present embodiment, in order to obtain the protected effect of accurate occupant M further, use detects build, physique, the sensor module of sitting posture, moveable front air-bag module 41, the moveable rear air-bag module 51 of occupant M.Control part 100 is based on the detection signal of sensor module, determine the seated position of the lower limb of occupant M, and to make front air-bag module 41 and rear air-bag module 51 with the seated position determined for mode that benchmark launches in front and back controls the deployed condition of these air-bag modules.By front air-bag module 41 and rear air-bag module 51, the knee bottom of occupant restraint.Below, be described in detail.
Before moveable, air-bag module 41 is except having front lower safety air bag 42, front lower inflator pump 43, also has front movable platen 44, front actuator 45.Front lower safety air bag 42 and front lower inflator pump 43 are fixed on front movable platen 44.
Front lower safety air bag 42 also can be the roughly cubic shaped identical with the safety air bag of common lower limb air-bag module, but preferably can adopt the longer cross section roughly U-shaped of above-below direction from front side and left and right sides parcel lower limb portion.
Front movable platen 44 has such as longer in the lateral direction rectangular plate shape, arranges movably towards the bottom from instrument carrier panel towards the direction before seat 5.Front lower safety air bag 42 and front lower inflator pump 43, by front movable platen 44, are fixed on vehicle body 2 movably.Front lower safety air bag 42 is arranged on desired position, can launch from the position desired by it to desired direction and scope further.By regulating the front and back position of front movable platen 44, the spread of front lower safety air bag 42 can be regulated to front and back.
Front actuator 45 controls the position of front movable platen 44.Front actuator 45 can be such as electrical motor.Before controlling in the longitudinal direction, the position of movable platen 44 is located to make it.By controlling the front and back position of front movable platen 44, can regulate the front lower safety air bag 42 after expansion in the front and back position taken in space 4 and scope.
After moveable, air-bag module 51 launches before seat 5 and between the knee bottom of occupant M.Rear air-bag module 51 launches forward at the rear side of the knee bottom being sitting in the occupant M on seat 5.Thus, when colliding, the knee bottoms such as the ankle of occupant M are not easily moved backward in the mode abutted with cushion part 6.
Rear air-bag module 51, except having rear safety air bag 52, rear inflator pump 53, also has rear movable platen 54, rear actuator 55.Rear safety air bag 52 and rear inflator pump 53 are fixed on rear movable platen 54.
Rear safety air bag 52 can adopt the longer cross section roughly U-shaped of above-below direction such as from rear side and left and right sides parcel lower limb portion.
The rear movable platen 54 of rear air-bag module 51 is configured between the cushion part 6 of seat 5 and the floor taking space 4.Rear movable platen 54 has such as longer in the lateral direction rectangular plate shape, arranges movably from the leading edge of cushion part 6 towards rear.Rear movable platen 54 is removable in the longitudinal direction.Or, also can be such as rotatable in the below of cushion part 6 as soft stool (オ ッ ト マ Application).
The rear actuator 55 of rear air-bag module 51 controls the position of rear movable platen 54, to make it locate in the longitudinal direction.Thereby, it is possible to regulate expanded position and the scope of carrying out the rear safety air bag 52 launched at the rear of the knee bottom being sitting in the occupant M on seat 5 in the longitudinal direction.The range and position of the rear safety air bag 52 that the front to cushion part 6 can be regulated to launch.
Be explained, though the spread of the safety air bag after expansion 42,52 and position and deployed condition utilize the position of above-mentioned control movable platen 44,54 method beyond method, also can realize.Such as, by controlling the amount of the high pressure gas injected from inflator pump 43,53 to safety air bag 42,52, the deployed condition of safety air bag 42,52 can be regulated.And then, also the size after launching or the not identical multiple safety air bags of shape can be arranged, then by a part of air-bag deployment wherein.These technology all can and use.
Sensor module 61,71,81,91 is the unit detecting the occupant M be sitting on seat 5.Sensor module 61,71,81,91 test example is as the position of the left and right knee of occupant M, the position of left and right shank, the position of left and right ankle, the seated position in the cushion part 6 of seat 5.In this case, sensor module has sensor module 71, seat position sensor assembly 81, pressure distribution sensor module 91 after a pair seat front sensor assembly 61, a pair seat.Sensor module 61,71,81,91 is connected with control part 100, to control part 100 output detection signal.
Seat front sensor assembly 61 is the sensor modules detecting the knee of the occupant M be seated, shank, the position of ankle and the position of knee bottom from front non-contactly.Seat front sensor assembly 61 has such as infradred sensor, ultrasonic transduter, thermal transmitter, imageing sensor.When to knee bottom respectively test example as knee before and before ankle, as long as the employing of seat front sensor assembly 61 is such as arranged with the sensor array of multiple infradred sensor in the vertical direction.By to detect respectively before knee and before ankle, the position before knee and the position before ankle can not only be determined, but also by calculating, the angle before the length before shank, the position before shank, shank can be determined.
Fig. 3 is the figure be described in the configuration taken in space 4 to a pair seat front sensor assembly 61.
A pair seat front sensor assembly 61 of Fig. 3 is arranged on the front of the cushion part 6 of seat 5 upwards with dividing right and left.Seat front sensor assembly 61 on the left of Fig. 3 is arranged on the bottom such as defining the A column taking space 4 backward.The seat front sensor assembly 61 on right side is arranged on the channel part being such as formed at floor backward.Or the seat front sensor assembly 61 on right side can be arranged on the central portion of instrument carrier panel backward.By being installed on these positions, obstacle is difficult between a pair seat front sensor assembly 61 and the pair of right and left knee bottom of occupant M.A pair seat front sensor assembly 61 reliably can detect the position before the knee bottom of the occupant M be seated.
In addition, each seat front sensor assembly 61 has the sensor array being arranged with three infradred sensors 62 in the vertical direction.Thereby, it is possible to detect the pair of right and left knee bottom of occupant M respectively, such as: the position before the position before knee, the position before shank, ankle.In this case, such as, as shown in the long and short dash line of Fig. 4 described later, according to the detecting distance to knee bottom of the interval of pair of right and left sensor, each sensor, by the calculating based on triangulation, the position of knee, shank and the ankle taken in space 4 can be determined.The position of knee bottom can be determined.
After seat, sensor module 71 is sensor modules of the position of the knee bottom from knee to ankle detecting the occupant M be seated from rear non-contactly.After seat, sensor module 71 has such as infradred sensor, ultrasonic transduter, thermal transmitter, imageing sensor.After seat, sensor module 71 has the sensor array being such as arranged with multiple infradred sensor in the vertical direction.
Fig. 4 is the figure be described in the configuration taken in space 4 to sensor module 71 after a pair seat.
After a pair seat, sensor module 71 is arranged at the left and right side of the cushion part 6 of seat 5.By being installed on this position, obstacle is difficult between the pair of right and left knee bottom of sensor module 71 and occupant M after a pair seat.After a pair seat, sensor module 71 reliably can detect the position below, knee bottom of the occupant M be seated.In this case, because sensor module 71 is arranged on and takes in space 4 and on the seat 5 that can move forward and backward, so based in the calculating of triangulation, can determine the relative position of knee bottom relative to seat 5 after a pair seat.
Seat position sensor assembly 81 is sensor modules of the front and back position of the seat 5 detected on seat slide 9.Seat position sensor assembly 81 has the position transduser such as reading the position on seat slide 9.
Fig. 5 be seat position sensor assembly 81 and pressure distribution sensor module 91 taking the instruction diagram of configuration in space 4.
In Figure 5, seat position sensor assembly 81 is configured with in the foot section 8 of seat 5.
The front and back position of the seat 5 detected by utilizing seat position sensor assembly 81, from the relative position of knee bottom relative to seat 5, can determine that the absolute location in space 4 is being taken in knee bottom.
Pressure distribution sensor module 91 detects the sensor module being sitting in the pressure distribution of the occupant M of the cushion part 6 of seat 5.Pressure distribution sensor module 91 has the pressure distribution sensor of such as seat 5 shape.As shown in Figure 5, by making this pressure distribution sensor between seat frame and padded coaming, the distribution of pressure that the body weight that can detect occupant M produces.
The pressure distribution of the cushion part 6 detected by pressure distribution sensor module 91 can be used as the data of the movement of occupant M when prediction is collided and uses.When occupant M be such as partially seated in cushion part 6 left and right either party, the load of human body is unequally to play a role about the mode laying particular stress on side and raise.If laying particular stress on as pressure distribution, detect laying particular stress on of this load, then can control the deployed condition of air-bag module 41 before pair of right and left respectively in ground, left and right.Such as, by increasing the injection rate laying particular stress on air-bag module 41 before side to the occupant M that is partially seated, the same high antisitic defect effect of occupant M be seated with roman can be expected.
Control part 100 is such as microcomputers.Riding vehicle 1 has ECU (control unit of engine).Control part 100 also can be the microcomputer of ECU.At control part 100, be connected with multiple sensor module 61,71,81,91, the taking-up device 25 of safety belt assembly 21, the inflator pump 33,43,53 of multiple air-bag module 31,41,51 and actuator 45,55.
Fig. 6 is the diagram of circuit representing the regulable control that control part 100 carries out.
Control part 100, in common traveling or when prediction is collided, repeats the process of Fig. 6.
Control part 100 is when obtaining detection signal from multiple sensor module (step ST1), determine the position (step ST2) of the knee bottom from knee to ankle being sitting in the occupant M on seat 5 according to those detection signals, and predict the movement (step ST3) of occupant M when colliding.
Such as, control part 100 based on the detection signal of a pair seat front sensor assembly 61, by the calculating of triangulation, the position before the knee bottom determining the occupant M be seated.The detection signal of control part 100 based on sensor module 71 after a pair seat and the detection signal of seat position sensor assembly 81, by the calculating etc. of triangulation, determine the position below, knee bottom of the occupant M be seated.
In addition, control part 100, based on the detection signal of pressure distribution sensor module 91, calculates the load diatibution of left and right.
Be explained, such as, when sensor module 61,71 scanning takes space 4, control part 100 needs before the seated position determining occupant M etc., the signal content relevant by the knee bottom extracting occupant M in the detection signal obtained from sensor module 61,71.
In this case, if control part 100 calculated example as occupant M not time signal content and the signal content detected between difference, then the signal content of this difference is defined as occupant M knee bottom produce signal content.
After determining the seated position etc. of occupant M, control part 100 calculates the moveable front and back position of front air-bag module 41, the front and back position (step ST4) of rear air-bag module 51.
Such as, with regard to front air-bag module 41, the mode of the position that control part 100 becomes with the rear portion of front lower safety air bag 42 after launching before the knee bottom (such as, knee and shank) determined calculates front and back position.
With regard to rear air-bag module 51, the mode that control part 100 becomes with the front portion of the rear safety air bag 52 after expansion knee bottom (such as, knee and the shank) position below determined calculates front and back position.
After the adjusting position of expanded position calculating safety air bag 42,52, control part 100 exports control signal to actuator 45,55.Thus, the position (step ST5) corresponding to the movement of occupant M when the front and back position of front air-bag module 41 and rear air-bag module 51 is adjusted to the position of the knee bottom determined and collides.
Such as, in front air-bag module 41, by the control of actuator 45 before the control signal based on control part 100, adjustment location is carried out to the front and back position of front movable platen 44, to make overlapping with before the knee bottom determined of the front lower safety air bag 42 after expansion below.
In rear air-bag module 51, by the control of the rear actuator 55 of the control signal based on control part 100, adjustment location is carried out to the front and back position of rear movable platen 54, to make to overlap before the rear safety air bag 52 after expansion with after the knee bottom determined.
Fig. 7 is the diagram of circuit of control when representing collision that control part 100 carries out.
The collision sensing signal etc. that control part 100 detects based on such as not shown acceleration pick-up, performs the process of Fig. 7.In addition, control part 100 can perform based on the collision prediction signal etc. from the surroundings monitoring apparatus being equipped on vehicle.
When collision being detected based on detection signal etc. (step ST11), control part 100 is to taking-up device 25 and multiple inflator pump 33,43,53 output services signal (step ST12).
By the input of working signal, taking-up device 25 pairs of safety strap 22 of safety belt assembly 21 batch maintenance.Thus, occupant M is constrained on seat 5 by safety strap 22.
By the input of working signal, the inflator pump 33,43,53 of air-bag module releases high pressure gas to safety air bag 32,42,52.Safety air bag 32,42,52 launches.Thus, the safety air bag 32,42,52 after expansion is between occupant M and the structure of vehicle.
In addition, the front lower safety air bag 42 of front air-bag module 41 and the rear safety air bag 52 of rear air-bag module 51 launch from the position after adjustment.By these safety air bags 42,52, the knee bottom of the occupant M be seated is by the position of knee bottom constrained in from front and back before the collision determined.
Be explained, in Fig. 6 and Fig. 7, control part 100 do not collide usual time, regulate the front and back position of the front and back position of the front movable platen 44 of front air-bag module 41, the rear movable platen 54 of rear air-bag module 51, when collision being detected, safety air bag 42,52 is launched.In addition, such as, control part 100 can expect to collide time, regulate the front and back position of the front and back position of the front movable platen 44 of front air-bag module 41 and the rear movable platen 54 of rear air-bag module 51.
In addition, when not being by above-mentioned position adjustments but when regulating the deployed condition of safety air bag 42,52 by the injection rate from inflator pump 43,53 to the high pressure gas of safety air bag 42,52, control part 100 indicates the injection rate to inflator pump 43,53.As long as injection rate at this moment decides based on the amount of expansion of the safety air bag 42,52 required for the position in order to be deployed into the knee bottom determined.
In addition, when by carrying out the deployed condition selecting to regulate safety air bag 42,52 from the size after expansion or variform multiple safety air bag, as long as control part 100 keeps the selection information of safety air bag, when collision being detected only to the inflator pump output services signal corresponding with selected safety air bag.
In addition, control part 100 also can not export same actuation signal to multiple air-bag module 31,41,51, but exports respective actuation signal.Particularly, also can staggering time knifeedge for the actuation signal of the front lower inflator pump 43 of front air-bag module 41 and the actuation signal for the rear inflator pump 53 of rear air-bag module 51.Even deviate from the timing of actuation signal, can, from the lower limb of front and back occupant restraint M, be also constant in this.
As mentioned above, in the present embodiment, when collision being detected, by front air-bag module 41 and rear air-bag module 51, from the knee bottom (such as, knee and shank) of front and back occupant restraint M.From front and back by the position of the knee lower constraint of occupant M to the knee bottom determined.The lower limb of occupant M are difficult to move forwards, backwards.In addition, the waist of occupant M is retrained by the safety strap 22 of safety belt assembly 21.Consequently, the lower limb of occupant M can be maintained to when colliding the state be sitting on seat 5.The lower limb entirety of occupant M can be constrained on seated position.
Thus, the lower limb of occupant M can not move to because of so-called dive effect (サ Block マ リ Application effect) and abut with tread plate.Owing to being input to the load of lower limb from tread plate and the possibility that instantaneous injury occurs in the lower limb portion of occupant M also reduces.
In addition, because the lower limb of occupant M are not tied to seating position with moving forward suitably, so the upper body position of occupant M is difficult to decline on seat 5.The injury values of the upper body caused because the upper body position of occupant M declines can be effectively suppressed to increase.Also suitably upper body can be protected.
Consequently, in the occupant protection system 10 of present embodiment, such as, combine with the safety belt assembly 21 carrying out occupant restraint M for benchmark with the seated position before colliding, suitably can not only protect the lower limb of occupant M, and suitably can protect upper body.The not getable advanced person of institute before can obtaining and the protected effect of occupant M accurately.
Particularly, owing to being distinguished the two knee bottoms of occupant restraint M by air-bag module 51 after air-bag module before pair of right and left 41 and pair of right and left, even if therefore when the sitting posture of occupant M is bad, the two knee bottoms of force of inertia from huckle input and separately and stably occupant restraint M also can be resisted.The maintenance of the knee bottom of left and right both sides can not be disturbed.In addition, even situation about rotating will be carried out in knee bottom centered by ankle, it also can be suppressed to rotate, can the two knee bottoms of stably occupant restraint M.The movement of the lower limb of occupant M when colliding can be suppressed.
In addition, in the present embodiment, control part 100, based on the detection signal of sensor module 61,71,81,91, is determined the position in the lower limb portion of the actual occupant M be sitting on seat 5, is determined the position in lower limb portion and support based on this detection.
Thus, even be sitting in the build of the occupant M on seat 5, physique, sitting posture are not identical, also can determine the position in the lower limb portion corresponding to respective build, physique, sitting posture, and the position in its lower limb portion can be bearing in.No matter the build of occupant M, physique, sitting posture how, can both expect that higher occupant M protects.
Like this, by the lower limb portion of occupant M being bearing in the position in the lower limb portion determined, can expect that unavailable more accurate occupant M protects in existing occupant protection system 10.
In addition, in the present embodiment, after front air-bag module 41 and pair of right and left, two positions at least comprising knee in knee, shank and ankle retrain as knee bottom by air-bag module 51.Thus, collide time, both made occupant M be difficult to from knee to ankle move forwards, backwards, make again shank be difficult to rotate around ankle.Knee is not only difficult to move in front-rear direction, and be difficult to vertically and left and right directions move.Three change in coordinate axis direction retrain knee position as a result, by utilizing such as safety belt assembly 21 to retrain waist in the lump, can be overall with the lower limb not departing from the mode strong ground occupant restraint M of seated position.When colliding, can by the lower limb of occupant M entirety constraint lower limb position before the collision.
On the other hand, if when such as making lower limb air-bag module launch from instrument carrier panel simply, the underfooting of downside of lower limb air-bag module after deployment the space of not launching air-bag module will be remained.Due to the impact etc. during collision, the ankle of occupant M and shank is likely caused to move forward through this space.In the present invention, roughly this possibility can be eliminated.
In addition, in the present embodiment, by the calculating of a pair front sensor assembly 61 and triangulation, the position before the knee bottom correctly can determining the occupant M be sitting on seat 5.Further, because a pair front sensor assembly 61 is arranged at the structure of the vehicle around seat 5, so other objects are difficult between a pair front sensor assembly 61 and the knee bottom of occupant M.Be difficult to hinder the position of the knee bottom determining occupant M.About a pair rear sensor module 71, too.
In addition, in the present embodiment, as sensor module, there is sensor module 71, seat position sensor assembly 81, pressure distribution sensor module 91 after a pair seat front sensor assembly 61, a pair seat.By adopting the combination of this sensor module, sensor is not given prominence to the absolute location that the surrounding being configured in seat 5 just can determine the lower limb portion of the occupant M taken in space 4.Sensor module can be made not hinder getting on or off the bus of occupant M or drive.
Particularly, by using the noncontacting proximity sensor of infradred sensor 62 and so on as sensor module 71 after seat front sensor assembly 61 or seat, do not need to configure touch sensor around seat 5.Be difficult to around seat 5 as touch sensor, seem mixed and disorderly.
[the second embodiment]
Then, the occupant protection system 10 of second embodiment of the invention is described.
The occupant protection system 10 of the second embodiment is compared with the first embodiment, and formation and the control of moveable front air-bag module 41 and moveable rear air-bag module 51 are different.Formation beyond this is same with the formation of the first embodiment, uses prosign to omit diagram and explanation.
Fig. 8 is the front air-bag module 41 of the second embodiment and the instruction diagram of rear air-bag module 51.
Before moveable, air-bag module 41 has multiple front lower safety air bag 42, multiple front lower inflator pump 43, front movable platen 44, front actuator 45.
Multiple front lower safety air bag 42 and multiple front lower inflator pump 43 go up along the vertical direction longer before in movable platen 44, arrangement is in the vertical direction.Multiple front lower inflator pump 43 is connected with control part 100 respectively.Multiple front lower safety air bag 42, by multiple front lower inflator pump 43, launches discriminably.Multiple front lower inflator pump 43 also can regulate injection rate respectively.Each front lower safety air bag 42 can adopt the cross section roughly U-shaped of wrapping up a part of lower limb portion from front side and left and right sides.
The front movable platen 44 of front air-bag module 41 and the configuration of front actuator 45 same with the first embodiment.Front movable platen 44 also may have such as longer in the lateral direction rectangular plate shape, and arranges movably on the direction before seat 5 in the bottom from instrument carrier panel.
After moveable, air-bag module 51 has multiple rear safety air bag 52, multiple rear inflator pump 53, rear movable platen 54, rear actuator 55.
In multiple rear safety air bag 52 and the longer in the vertical direction rear movable platen 54 of multiple rear inflator pump 53, arrangement in the vertical direction.Multiple rear inflator pump 53 is connected with control part 100 respectively.Multiple rear safety air bag 52, by multiple rear inflator pump 53, launches discriminably.Multiple rear inflator pump 53 also can regulate injection rate respectively.Each rear safety air bag 52 can adopt the cross section roughly U-shaped of wrapping up a part of lower limb portion from rear side and left and right sides.
The rear movable platen 54 of rear air-bag module 51 and the configuration of rear actuator 55 same with the first embodiment.Rear movable platen 54 also may have such as longer in the lateral direction rectangular plate shape, and rearward arranges movably from the leading edge of cushion part 6.
Fig. 9 is the diagram of circuit representing the regulable control that control part 100 carries out.
Control part 100, in common traveling or when predicting collision, performs the regulable control process of Fig. 9.
Determine the seated position of occupant M etc. in step ST3 after, control part 100 calculates the moveable front and back position of front air-bag module 41, the front and back position (step ST4) of rear air-bag module 51.
In addition, control part 100, according to the height before the knee bottom determined (such as, knee and shank), in front air-bag module 41, selects the front lower safety air bag 42 (step ST21) carrying out launching.Such as, when the position of the knee determined is lower, select lower two front lower safety air bags 42.In addition, when the position of the knee determined is higher, select whole three front lower safety air bags 42.
In addition, control part 100, according to the knee bottom determined (such as, knee and shank) height below, in rear air-bag module 51, selects the rear safety air bag 52 (step ST21) carrying out launching.Such as, when determine shorter at one's knees, safety air bag 52 after selecting two.In addition, when determine longer at one's knees, safety air bag 52 after selecting whole three.
Control part 100 is to determining that the information of selected safety air bag 42,52 is preserved.
Figure 10 is the diagram of circuit of control when representing collision that control part 100 carries out.
Control part 100, when collision being detected, performs the control treatment of Figure 10.
Control part 100 is (step ST11) when collision being detected, just to taking-up device 25 and selected inflator pump 33,43,53 output services signal (step ST31).
At this moment, control part 100 based on the selection information of pre-stored, the inflator pump output services signal corresponding with selected front lower safety air bag 42 in the multiple front lower inflator pump 43 of only forward security air bag component 41.
In addition, control part 100 based on the selection information of pre-stored, the inflator pump output services signal corresponding with selected rear safety air bag 52 in the multiple rear inflator pump 53 of only air-bag module 51 backward.
As mentioned above, the occupant protection system 10 of present embodiment, except can realizing the effect of the first embodiment, also can realize following effect.
That is, in the present embodiment, according to the knee bottom determined (such as, knee and shank) upper-lower position, with regard to front air-bag module 41, select the front lower safety air bag 42 that will launch, with regard to rear air-bag module 51, select the rear safety air bag 52 that will launch.Thus, such as, by the safety air bag corresponding with the length of respective (such as, shank) at one's knees, can preferably retrain the masculinity and femininity that length is at one's knees different greatly.The spread of safety air bag 42,52, by the movable platen 44,54 that can move forward and backward, can regulate in the longitudinal direction, by the selection of multiple safety air bags 42,52 be arranged above and below, can regulate in the vertical direction.
In addition, due to the size of safety air bag 42,52 one by one can be reduced, therefore do not need the size strengthening respective inflator pump 43,53.Use little inflator pump 43,53, just can retrain knee bottom strongly.By each safety air bag 42,52 after expansion, obtain higher drag, higher confining force sustainably.
Be explained, when the height of the cushion part 6 of adjustable seat 5 in the vertical direction, when after a pair seat, sensor module 71 is installed on the cushion part 6 of seat 5, the upper-lower position taking the knee bottom (such as, knee and shank) in space 4 is likely indefinite.In this case, as long as detected the height of cushion part 6 by seat position sensor assembly 81, then according to the height of the cushion part 6 detected, the knee bottom determined by the detection signal based on sensor module 71 after a pair seat is adapted to absolute location relative to the relative position of seat 5.Thereby, it is possible to calculate the absolute location taking space 4.
[the 3rd embodiment]
Then, the occupant protection system 10 of the 3rd embodiment of the present invention is described.
The occupant protection system 10 of the 3rd embodiment is compared with the second embodiment, and formation and the control of moveable front air-bag module 41 and moveable rear air-bag module 51 are different.Formation beyond this is all same with the formation of the second embodiment, uses prosign to omit diagram and explanation.
Figure 11 is the front air-bag module 41 of the 3rd embodiment and the instruction diagram of rear air-bag module 51.
Before moveable, air-bag module 41 has multiple front lower safety air bag 42, multiple front lower inflator pump 43, front movable platen 44, front actuator 45.
In multiple front lower safety air bag 42 and the longer in the lateral direction front movable platen 44 of multiple front lower inflator pump 43, arrangement in the lateral direction.Each front lower safety air bag 42 can adopt the shape longer up and down that such as can retrain in front of the whole lower limb portion.
After moveable, air-bag module 51 has multiple rear safety air bag 52, multiple rear inflator pump 53, rear movable platen 54, rear actuator 55.
In multiple rear safety air bag 52 and the longer in the lateral direction rear movable platen 54 of multiple rear inflator pump 53, arrangement in the lateral direction.Each rear safety air bag 52 can adopt the overall shape longer up and down that such as can retrain lower limb portion below.
Control part 100, when common traveling or when prediction is collided, performs the regulable control process of Fig. 9.
Determine the seated position of occupant M etc. in step ST1 ~ ST3 after, control part 100 calculates the moveable front and back position of front air-bag module 41, the front and back position (step ST4) of rear air-bag module 51.
In addition, control part 100, according to the right position before the knee bottom determined (such as, knee and shank), in front air-bag module 41, selects the front lower safety air bag 42 (step ST21) carrying out launching.At this moment, control part 100 not only can select the front lower safety air bag 42 of the front side of knee bottom, and front lower safety air bag 42 adjacent about can selecting it.
In addition, control part 100, according to the knee bottom determined (such as, knee and shank) right position below, in rear air-bag module 51, selects the rear safety air bag 52 (step ST21) carrying out launching.At this moment, control part 100 not only can select the rear safety air bag 52 of the rear side of knee bottom, and rear safety air bag 52 adjacent about can selecting it.
Control part 100 is to determining that the information of selected safety air bag 42,52 is preserved.
Control part 100, when collision being detected, performs the control treatment of Figure 10.
Control part 100 is (step ST11) when collision being detected, to taking-up device 25 and selected inflator pump 43,53 output services signal (step ST31).
At this moment, control part 100 based on the selection information of pre-stored, the inflator pump output services signal corresponding with selected front lower safety air bag 42 in the multiple front lower inflator pump 43 of only forward security air bag component 41.
In addition, control part 100 based on the selection information of pre-stored, the inflator pump output services signal corresponding with selected rear safety air bag 52 in the multiple rear inflator pump 53 of only air-bag module 51 backward.
As mentioned above, the occupant protection system 10 of present embodiment, except can realizing the effect of the first embodiment, also can realize following effect.
That is, in the present embodiment, according to the knee bottom determined (such as, knee and shank) right position, with regard to front air-bag module 41, select the front lower safety air bag 42 that will launch, with regard to rear air-bag module 51, select the rear safety air bag 52 that will launch.Thus, by the safety air bag 42,52 corresponding with the right position of respective knee bottom (such as, knee and shank), can preferably retrain the occupant M that the right position of knee bottom is different greatly.The spread of multiple safety air bag 42,52, by the movable platen 44,54 that can move forward and backward, can regulate in the longitudinal direction, and passes through multiple safety air bags 42,52 of left-right situs, can regulate in the lateral direction.
In addition, due to the size of safety air bag 42,52 one by one can be reduced, therefore do not need the size strengthening respective inflator pump 43,53.Use little inflator pump 43,53, just can retrain knee bottom strongly.By each safety air bag 42,52 after expansion, obtain higher drag, higher confining force sustainably.
Be explained, in the lateral direction adjustable seat 5 cushion part 6 when, when after a pair seat, sensor module 71 is installed on the cushion part 6 of seat 5, the right position taking the knee bottom (such as, knee and shank) in space 4 is likely indefinite.In this case, as long as detected the right position of cushion part 6 by seat position sensor assembly 81, then according to the right position of the cushion part 6 detected, the knee bottom determined by the detection signal based on sensor module 71 after a pair seat is adapted to absolute location relative to the relative position of seat 5.Thereby, it is possible to calculate the absolute location taken in space 4.
In addition, the second embodiment and the 3rd embodiment also can combine.
Such as, that is, in front air-bag module 41, multiple front lower safety air bag 42 can be arranged as rectangular on above-below direction and left and right directions.In this case, as long as control part 100 determines the position of the above-below direction of knee bottom and the position of left and right directions, then select the front lower safety air bag 42 of such as corresponding with knee position and the front lower safety air bag 42 on the downside of it accordingly.
Above embodiment is the example of the preferred embodiment of the present invention, but the present invention is not limited to this, in the scope not departing from invention spirit, can carry out all distortion or change.
In the above-described embodiment, for a seat 5, to be provided with before pair of right and left air-bag module 51 after air-bag module 41 and pair of right and left.
Air-bag module 51 after one that such as, about in addition, can being provided with a seat 5 a shared front air-bag module 41 and left and right share.In addition, either party in front air-bag module 41 and rear air-bag module 51 also can be set.The air-bag module of the lower limb of the occupant restraint M of more than three also can be set a seat 5.In these cases, by the expansion shape of such as design safety air bag 42,52, also function can be played in the mode retraining the lower limb of the occupant be seated M or remain on the seated position determined.
In the above-described embodiment, multiple sensors assembly 61,71,81,91 is provided with to a seat 5.
In addition, such as, can to the sensor module of seat 5 setting example as seat front sensor assembly 61 and so on.Even if in this case, also can not only based on the position of the knee bottom determined, the deployed condition of air-bag module 41 before regulating, but also the deployed condition of rear air-bag module 51 can be regulated.
In the above-described embodiment, pressure distribution sensor module 91 is arranged at the cushion part 6 of seat 5.
In addition, such as, pressure distribution sensor module 91 also can be arranged in the floor before seat 5.In this case, pressure distribution sensor module 91 can detect heel, the tiptoe of the occupant landed.And, if the position of heel and knee can be determined, then also by calculating, the position of knee bottom entirety can be determined.

Claims (8)

1. an occupant protection system, comprising:
Multiple air-bag module, it comprises the lower limb air-bag module that the lower limb portion to the occupant on the seat being sitting in vehicle launches;
Control part, it controls described multiple air-bag module; And
Sensor module, it detects the occupant sat on the seat,
Wherein said control part is connected with described sensor module, detection signal based on described sensor module determines the position in the lower limb portion sitting the occupant under state on the seat, control the deployed condition of described lower limb air-bag module relative to the position in determined described lower limb portion, and by the described lower limb air-bag module after expansion, the lower limb portion of occupant is bearing in the position in determined described lower limb portion.
2. occupant protection system as claimed in claim 1, wherein,
Described multiple air-bag module has the knee lower safety air bag component of the knee bottom expansion to the occupant sat on the seat, as described lower limb air-bag module,
Based on the detection signal of described sensor module, described control part determines that position in the knee bottom sitting the occupant under state is on the seat as the position in described lower limb portion, described knee lower safety air bag component is launched to the position of determined described knee bottom, and by the described knee lower safety air bag component after expansion, by the position of the knee lower support of occupant in determined described knee bottom.
3. occupant protection system as claimed in claim 1, wherein,
Described multiple air-bag module has front air-bag module and rear air-bag module as described lower limb air-bag module, described front air-bag module launches backward in the front side of the knee bottom sitting occupant on the seat, described rear air-bag module launches forward at the rear side of the knee bottom sitting occupant on the seat
Based on the detection signal of described sensor module, described control part determines that position in the knee bottom sitting the occupant under state is on the seat as the position in described lower limb portion, the position of described front air-bag module and described rear air-bag module the past backward determined described knee bottom is launched, and by the described front air-bag module after expansion and the described rear air-bag module after launching, from front and back by the position of the knee lower constraint of occupant in determined described knee bottom.
4. occupant protection system as claimed in claim 3, wherein,
Described front air-bag module and described rear air-bag module retrain two positions at least comprising knee in the knee of occupant, shank and ankle.
5. the occupant protection system according to any one of claim 2 ~ 4, wherein,
Described sensor module has the pair of sensors assembly of the structure of the vehicle be juxtaposed in the lateral direction around seat,
Described control part, by utilizing the calculating of the triangulation of the relative position of the detection signal of described pair of sensors assembly and described pair of sensors assembly, determines the position of the knee bottom sitting occupant on the seat.
6. the occupant protection system according to any one of Claims 1 to 4, wherein,
Described sensor module has from least one sensor module selected in following sensor module:
To the sensor module that the position sat before the knee of occupant on the seat, shank or ankle is detected;
To the sensor module that the position sat after the knee of occupant on the seat, shank or ankle is detected;
To the sensor module that the position of the seat taken in space is detected; And
To the sensor module that the pressure distribution of occupant's generation of sitting on the seat detects,
And wherein, described control part, based on the detection signal of at least one sensor module described, determines the position in the lower limb portion sitting the occupant under state on the seat.
7. the occupant protection system according to any one of Claims 1 to 4, wherein,
The sensor that the position of occupant is detected non-contactly that described sensor module has.
8. occupant protection system as claimed in claim 7, wherein,
Infradred sensor, ultrasonic transduter or imageing sensor are comprised to the sensor that the position of occupant is detected non-contactly.
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